Travelers coming to the UK from Belgium, Andorra and the Bahamas will be quarantined this weekend.
Rising Covid 19 infection rates in the three countries mean that they have been removed from government travel corridors, relieving arrivals of self-isolation.
The measures are to come into effect in England at 4 a.m. on Saturday.
In Wales, restrictions will come into effect as of midnight on August 6th.
At the same time, the Foreign and Commonwealth Office updated the travel advice to warn of all but essential trips to Andorra, Belgium and the Bahamas.
Brunei and Malaysia have been added to the government’s travel corridor list after the number of confirmed cases of coronavirus has decreased, so that arrivals from these countries no longer need to be quarantined.
Belgium has seen an increase in coronavirus cases in recent weeks and has risen to 27.8 new cases per 100,000 people.
This is higher than the Spanish level of 27.4 at the time the UK introduced travel restrictions.
In Andorra, new cases have increased five-fold per week since mid-July, while the weekly fall rate in the Bahamas was 78.6 last week, after 3.1 in the middle of last month.
The Federal Foreign Office claims to “constantly check” its own travel advice.